Any body ever changed there dab module and how did they do it any help would be great

Yes I did mine. When I bought the Car it had no DAB reception, bought a module off eBay for £40 and fitted it. Boot area passenger side (UK) remove the panel and from memory the DAB unit is near the bottom.
It's is fairly straight forward, just some nuts to undo so that some other modules can be moved aside and the DAB module has three cables to plug in I think, and jobs a good'un Dec 2011 L322 Range Rover Vogue SE TDV8 Orkney Grey/Sand leather

Thanks will give it a go when I find one for the right money

just be aware that there is less and less on Dab as more and more are migrating over to Dab+, I got the Invery and bluetooth from apps on the phone , there is a DaB module that gives you Dab+ but its around £500 as opposed to the £80 I paid for the Invery.....
maybe worth considering? 2011 L322 Autobography - a lot of bells and some of the whistles...owner with no idea!